Insulator for electric wires.



PATENTED OUT. 24, 1905.

C. A. HUMPHRBY. INSULATOR FOR ELECTRIC WIRES.

APPLICATION FILED PEB.15,1904.

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WITNESSES $3M? OLARANOE A. HUMPHREY, OF ELYRIA, OHIO.

INSULATOR FOR ELECTRIC WIRES.

Specification of Letters Patent.

Patented Oct. 24:, 1905.

Application filed February 15, 1904;. Serial No. 193,540.

To a whom, it may concern.-

Be it kno wn that LCLARANOE A. HUMPHREY, a citizen of the United States,residing at Elyria, in the county of Lorain and State of Ohio, haveinvented certain new and useful Improvements in Insulators for ElectricWires; and I do declare that the following is afull, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to insulators for electric wires; and the inventionconsists in an insulator particularly adapted for outdoor uses to securetelegraph and other wires on a line ex posed to theelements,substantially as shown and described, and particularly pointedout in the claims.

In the accompanying drawings, Figures 1 and 2, respectively, arevertical sectional elevations of my new and improved insulator, taken onlines at right angles to each other, the lower portion of each viewrepresenting a support, which presumably is a pole or stud upon whichthe insulator is mounted. Fig. 3 is a vertical sectional elevation of apreferably wooden or glass cap by which the insulator is surmounted andwhich serves both as a locking and sheltering medium, as willhereinafter more fully appear. Fig. A is a side elevation of apreferably non-conducting plug or follower for engaging upon the wire,and Fig. 5 is a perspective view of a glass or other insulating supportfor the wire sleeved upon the stud-support. Fig. 6 is a perspective viewof a wooden or other support, such as a pole, post, stud, or the likefor supporting the insulator and the wire.

As thus shown, A is the supporting member of my invention and may be apole, stud, or other upright, preferably of wood, but may be of anyother suitable material and constitute the support for all the otherparts of the device. To this end the said post or support A is providedwith a transverse slot at in its top, a central bore a about the depthof said slot and an annular thread a the depth of the said slot orapproximately from the top down.

B represents a non-conducting sleeve engaged over support A from the topand pro vided with a central cross portion 6, having a trough to carrythe wire W. This part may be made of any suitable non-conductingmaterial, but it is preferably of glass, and trough b is preferablyhighest at its middle or center and inclined downward or outward at eachside, so as to make only a comparatively short surface engagement on thetrough and which will be under cover. The cross portion or trough Z) isdesigned to fit somewhat comfortably on the slot a of the support A andrests down upon the bottom of the said slot, thus exposing the threadedpart of support A above the said sleeve B. Said sleeve encompasses thepost A about and below the slot a, so as to afford a non-conductingsurface at this point and prevent possible run ning or jumping off ofthe current from the trough upon the wood surface of the post.

O represents a plug or follower adapted to enter loosely in the bore ain the top of support A. The depth of said bore is the depth of slot (0,and the said plug has a slightlygrooved rib 0 across its bottom adaptedto rest upon wire W in the trough b. This plug also is of glass or ofany equivalent non-conducting and enduring material which will serve asa good insulator and extends up into the cap D above the threaded partof the base-support A when in use, relatively as seen in Figs. 1 and 2.

Now in order to engage the plug firmly upon the wire and look all theparts permanently together I employa preferably wooden or glass cap D,which is threaded to engage upon post A and to rest down upon the plug Oand bear it firmly upon wire W, and thus cause the wire to be gripped soas to be effectually fastened.

It will be noticed that by this construction there is an exclusive glassor insulating contact for the wire above and below and that the point ofengagement of plug 0 upon the wire is sheltered or housed bytheoverhanging and laterally-spreading cap. The narrow point of contactinternally of the parts also promotes protection in that respect. Forthis reason also, and to cause drainage of any moisture that mayotherwise gather in trough Z), I incline the bottom of the said troughat its ends 5 downward considerably, which leaves the point of wirecontact at the center only, as above described. It will be observed alsothat this construction is such that while it will afford perfectfastening for the wire for an indefinite period it is readily separableand removable in case a change is required.

What I claim is 1. In wire-insulators, a support and a nonconductingpart sleeved over the top thereof and having a trough to receive thewire, a follower of non-conducting material to engage upon the wire onsaid trough and a cap bearing upon said follower and having lockingengagement with the said support, substantially as described.

2. An insulator for telegraph and other wires comprising a support witha slot transversely in its top and a thread about said slotted portion,in combination with a nonconducting member sleeved over said support andprovided with a channeled cross portion for the wire resting in saidslot and a separate part bearing on said wire, said channeled crossportion being beneath the thread about the top of the said support,substantially as described.

3. The support for the insulator having an open slot centrally in itstop and threaded about its outer portion, a wire-supporting sleeve overthe said slotted support having a trough integral therewith and engagedin said slot, a follower adapted to engage upon a Wire in said troughand a cap resting upon said follower and engaged on the threaded portionof the said support, the said follower having an engaging rib on itsbottom, substantially as described.

t. In insulating mechanism for telegraphic and other wires, anon-conducting sleeve having a trough centrally across its top and asupport therefor, in combination with a boltshaped follower having atransverse rib on its end over the middle portion of said trough and acap bearing on the end of said follower and holding it in engagingposition, substantially as described.

In testimony whereof I sign this specification in the presence of twowitnesses.

CLARANCE A. HUMPHREY. itnesses:

L. B. FAUVER, R. S. READ.

